Road-scraper attachment for trucks



June 3, 1930. E. A. WEEKS ROAD SCRAPER ATTACHMENT FOR TRUCKS 2Sheets-Sheet 1 Filed Nov. 28, 1928 INVENTOR 6/7266? fl. Mani d'ATTORNEYS June 3, 1930. E. A. WEEKS 1,761,605

ROAD SCRAPER ATTACHMENT FOR TRUCKS Filed Nov. 28, 1928 2 Sheets-Sheet .2

' Patented June 3, 1930 UNITED STATES PATENT OFFICE ERNEST A. WEEKS, FKALAMAZOO, MICHIGAN, ASSIGNOR T0 ROOT SPRING SCRAPER COMPANY OFKALAMAZOO, MICHIGAN ROAD-SCRAPER ATTACHMENT FOR TRUCKS Application filedNovember 28, 1928. Serial No. 322,553.

This invention relates to improvements in a road scraper attachment fortrucks.

The objects of the invention are: First, to provide such a structurewhich is readily attached and adjustable for height.

Second, to provide an improved pivoting means with attaching clamps.

Third. to provide improved means of centering the attachment.

Further objects and objects pertaining to details and economies ofconstruction and operation will definitely appear from the detaileddescription to follow. The invention is defined in the claims.

A preferred embodiment of my invention is illustrated in theaccompanying drawing, in which:

Fig. l is a side perspective view of part of a truck chassis with myimproved scraper attachment in place, portions being indicated by dottedlines. a

Fig. 2 is a plan view of the parts of the chassis and attachmentappearing in Fig. 1

showing the curved attachment segments at each side of the chassis, aportion of the cab being broken away to show details.

Fig. 3 is a detail perspective view showing the suspension bracketsand'the curved side section in separated relation, one of the side beamsonly being shown.

Fig. 4 is an enlarged detail elevation view of the forward hangerappearing in Fig. 1 and the attaching end plate of the segment showingdetails and showing the adjusting means.

Fig. 5 is a detail elevation view from the left hand side of Fig. 4, theadjusting brackets and certain details being indicated by dotted lines.

Fig. 6 is an enlarged detail of the adjustable clamp means for thehanger board partly in section on line 66 of Figs. 2 and 7.

Fig. 7 is an enlarged detail sectional view on line 77 of Figs. 2 and 6,showing the clamping bolts.

The parts will be identified by their numerals of reference which arethe same in all the views.

1,1 are the side beams of a truck frame or chassis. 2 is the cross team.8 the cab and 4, 4 are hangers on which are adjustably'suspended thecurved angle bar supporting segments 5, 5. j

6 is a detachable supporting beam or hanger board for the scraper, 7 isthe scraper and 8 is the scraper rockshaft. 9 is the hydraulic cylinderfor actuating the scraper. 10 and 11 are clamps for clamping the hangerboard 6 to the supporting segment 5.

12 is the cable radius connection for maintaining the beam substantiallycentral while it is being adjusted on the segments or reversed.

The hangers 4 are each secured by clamp bolts 41 and cross piece 42 tothe side rail 1,,by bolts 41 through one limb of the angle ironconstituting the hanger. The hangers each contain slotted holes 43 tofacilitate the adjustment and are provided with angle ad justingbrackets 44 secured thereto by bolts 45 and containing vertical boltholes 46 for the adjusting bolts 47.

The supporting segments 5 are angle structural steel bent in the arc ofa circle with the horizontal rim outward. These are provided withattaching plates 51 at each end which are perforated at 52 forattachment by the attaching bolts 53 to the hanger 4. An angle bracket55 is secured to each end plate 51 and has vertical bolt hole 56 toreceive the adjusting bolt 47 by which means the adjustment and exactlevel of the supporting segment is secured, no matter what the angle ofthe side beam of the chassis may be. These side beams are usually on anincline, being lowest at the front.

The detachable supporting beam 6 is secured by'its opposite ends to thesegment 5 by main clamp 10 which has a hook 101 which engages outwardlyover the vertical limb of the segment 5. It is securely clamped by bolt102 having its nut 103 at the top. Clamp bolt 102 is disposed in aslotted hole 61 in the beam 6. A toe clamp 11 is secured in place by apair of bolts 111 through holes 62 in the beam 6. These bolts are yolkedtogether by bar 112which engages the nuts 113 on the lower ends of thebolts, the bolts being provided with square heads 114 for adjustment andattachmenti The beam 6 is maintained centrally during adjustment by theradius cable or connection 12 which is secured by suitable eyes 121 tothe forward ends of the supporting segment 5. It passes through loop 122secured by bolt 123 at substantially the center of the beam 6.

It will be seen that the beam can thus be very readily adjusted, itbeing maintained at the center by this connection. The cable 12 playsslightly through the eye 122 to permit movement and avoid binding. Barsmay be used in place of the cable.

I will not describe in detail the hydraulic means for actuating thescraper because that is made the subject matter of a concurrentapplication.

My improvements pertain to the matters of adjustment, the matter ofmaintaining the adjustable beam central in its relation duringadjustment or reversal and the formation of the parts in such a way thatthey will have the required strength for the heavy work of a scraper. Iam aware that the curved segment broadly as appears in this drawing areold and I do not wish to be understood as claiming the same. I wish toclaim the structure specifically as pointed out in the appended claims.

Having thus described my invention what I claim as new and desiretosecure by Letters Patent is:

1. In a scraper attachment for a truck chassis, the combination ofdetachable hangers. having slotted holes therein, brackets on said.hangers with adjusting bolts therethrough for adjusting the elevation ofthe scraper attachment, curved angle bar segments having end plates forattachment to the said hangers, brackets on said attaching platesdisposed for cooperating with said adjusting bolts through the bracketson the hangers, a scraper comprising a supporting beam with a scraperpivotally connected thereto, hook clamps within the segments forattachment of the beam to the angle bar segments, toe clamps at theoutside for clamping the outside thereof, and an equalizing radius cableconnected to the forward ends of the said segments with loop connectioncentrally of said beam, coacting as specified.

2. In a scraper attachment for a truck chassis, the combination ofdetachable hangers having slotted, holes therein, brackets on saidhangers with adjusting bolts therethrough for adjusting the elevation ofthe scraper attachment, curved angle bar segments having end plates forattachment to the. said hangers, brackets on said attaching platesdisposed for cooperating with said adjusting bolts through the bracketson the hangers, a scraper comprising a supporting beam with a scraperpivotally connected thereto, hook clamps within the segments forattachment of the beam tothe angle bar segments, and toe clamps at theoutside for clamping the outside thereof, coacting as specified.

3. In a scraper attachment for a truck chassis, the combination ofdetachable hangers, curved angle bar segments having end plates forattachment to the said hangers, a supporting beam with a scraperpivotally connected thereto, hook clamps within the segments forattaolnnent of the beam to the angle bar segments, and toe clanips atthe outside for clamping the outside thereof, coacting as specified.

4. In a scraper attachment for a truck chassis, the combination ofdetachable hangers having slotted holes therein, brackets on saidhangers with adjusting bolts therethrough for adjusting the elevation ofthe scraper attachment, curved angle bar segments having end plates forattachment to the said hangers, brackets on said attaching platesdisposed for cooperating with said adjusting bolts through the bracketson the hangers, and a scraper comprising a supporting beam with ascraper pivotally connected thereto carried by said segments, coactingas specified.

5. In a scraper attachment for a truck chassis, the combination ofsuitable hangers, curved segments at each side of the body, a hangerbeam with adjusting clamps for securing to the said segments, and aradius cable connected to the forward ends of the said segments and by asuitable eye to the center part of the hanger beam, as specified.

6. In a scraper attachment for a truck chassis, the combination ofcurved segments at each side of the chassis, a hanger beam with scrapercarried by the said segments and adjustable thereon, and a radialconnection from the said segments to the center of said hanger beam toguide the same when adjusting the angle thereof to the said chassis, asspecified.

In witness whereof I have hereunto set my hand.

ERNEST A. IVEEKS.

